hata nerede

$sorgu=mysql_query("select * from games order by id DESC");
while($oyun=mysql_fetch_array($sorgu)){
$oyun_adi=$oyun['gName'];
$oyun_resmi=$oyun['gThumb'];
}
Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in /home/iskeztr1/public_html/berko.php on line 14

hata almaktayım